U.S. patent application number 17/308053 was filed with the patent office on 2022-01-20 for acrylic resin emulsion with high heat resistance, polymeric composition thereof and method for preparing the same.
The applicant listed for this patent is NAN YA PLASTICS CORPORATION. Invention is credited to Hui-Chun Chuang, SEN-HUANG HSU, TE-CHAO LIAO.
Application Number | 20220017738 17/308053 |
Document ID | / |
Family ID | 1000005593356 |
Filed Date | 2022-01-20 |
United States Patent
Application |
20220017738 |
Kind Code |
A1 |
LIAO; TE-CHAO ; et
al. |
January 20, 2022 |
ACRYLIC RESIN EMULSION WITH HIGH HEAT RESISTANCE, POLYMERIC
COMPOSITION THEREOF AND METHOD FOR PREPARING THE SAME
Abstract
An aqueous acrylic resin with high heat resistance, a polymeric
composition, and a method for preparing the aqueous acrylic resin
with high heat resistance are provided. The polymeric composition
includes a monomer composition and a reactive emulsifier. Based on
100 wt % of the monomer composition, the monomer composition
includes at least one alkyl group containing methyl acrylate, at
least one carboxyl group containing methacrylic acid, an
alkene-based unsaturated group containing methyl acrylate, a
hydroxyl group containing acrylic polyester polyol and/or a
hydroxyl group containing acrylic polyether polyol, and an
alkoxysilane.
Inventors: |
LIAO; TE-CHAO; (TAIPEI,
TW) ; HSU; SEN-HUANG; (TAIPEI, TW) ; Chuang;
Hui-Chun; (TAIPEI, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
NAN YA PLASTICS CORPORATION |
Taipei |
|
TW |
|
|
Family ID: |
1000005593356 |
Appl. No.: |
17/308053 |
Filed: |
May 5, 2021 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
C08F 220/1804 20200201;
C08K 5/19 20130101; C08L 2201/52 20130101; C08K 5/5415 20130101;
C08K 3/26 20130101; C08K 5/42 20130101; C08F 220/14 20130101; C08F
220/1811 20200201; C08L 33/08 20130101; C08F 220/06 20130101; C08F
2/24 20130101; C08K 2003/262 20130101; C08L 2201/08 20130101 |
International
Class: |
C08L 33/08 20060101
C08L033/08; C08F 220/06 20060101 C08F220/06; C08F 220/14 20060101
C08F220/14; C08F 220/18 20060101 C08F220/18; C08F 2/24 20060101
C08F002/24; C08K 3/26 20060101 C08K003/26; C08K 5/19 20060101
C08K005/19; C08K 5/42 20060101 C08K005/42; C08K 5/5415 20060101
C08K005/5415 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 14, 2020 |
TW |
109123724 |
Claims
1. A polymeric composition for forming an aqueous acrylic resin
with high heat resistance, comprising a monomer composition and a
reactive emulsifier, wherein based on 100 wt % of the monomer
composition, the monomer composition includes: 92 to 98 wt % of at
least one alkyl group containing methyl acrylate; 1 to 4 wt % of at
least one carboxyl group containing methacrylic acid; 1 to 5 wt %
of an alkene-based unsaturated group containing methyl acrylate; 1
to 5 wt % of at least one of a hydroxyl group containing acrylic
polyester polyol and a hydroxyl group containing acrylic polyether
polyol; and 1 to 5 wt % of an alkoxysilane.
2. The polymeric composition according to claim 1, wherein the at
least one alkyl group containing methyl acrylate is selected from
the group consisting of methyl methacrylate, ethyl acrylate, propyl
methacrylate, butyl acrylate, isobutyl methacrylate, pentyl
methacrylate, hexyl methacrylate, heptyl methacrylate, octyl
methacrylate, 2-ethylhexyl methacrylate, n-octyl methacrylate,
iso-octyl methacrylate, nonyl methacrylate, decyl methacrylate,
lauryl methacrylate, octadecyl methacrylate, methoxyethyl
methacrylate, n-butyl methacrylate, 2-ethylhexyl acrylate, and
ethoxymethyl acrylate.
3. The polymeric composition according to claim 2, wherein the at
least one alkyl group containing methyl acrylate includes methyl
methacrylate, n-butyl methacrylate, and butyl acrylate that are
added in a weight ratio of 3:1:1.
4. The polymeric composition according to claim 1, wherein the at
least one carboxyl group containing methacrylic acid is selected
from the group consisting of acrylic acid, methacrylic acid, maleic
acid, fumaric acid, itaconic acid, butenoic acid, and maleic
anhydride.
5. The polymeric composition according to claim 4, wherein the at
least one carboxyl group containing methacrylic acid includes
acrylic acid and methacrylic acid that are added in a weight ratio
of 1:1.
6. The polymeric composition according to claim 4, wherein the
alkene-based unsaturated group containing methyl acrylate is
selected from the group consisting of vinyl acetate, styrene,
methyl styrene, vinyl toluene, methacrylonitrile, diacetone
acrylamide, N-hydroxymethyl acrylamide, cyclohexyl methacrylate,
and isobornyl methacrylate.
7. The polymeric composition according to claim 6, wherein the
alkene-based unsaturated group containing methyl acrylate is
isobornyl methacrylate.
8. An aqueous acrylic resin with high heat resistance formed by the
polymeric composition as claimed in claim 1.
9. A method for preparing an aqueous acrylic resin with high heat
resistance, comprising: forming an aqueous system in a reaction
tank, the aqueous system including deionized water, a buffer, an
emulsifier and an initiator; forming the polymeric composition as
claimed in claim 1 into a pre-emulsion, and adding a portion of the
pre-emulsion to the aqueous system to carry out a reaction, so as
to form a seeded emulsion; and adding a remaining portion of the
pre-emulsion to the aqueous system to continue the reaction.
10. The method according to claim 9, wherein the buffer is sodium
bicarbonate or ammonia water, the emulsifier is sodium
dodecylbenzene sulfonate, and the initiator is sodium persulfate.
Description
CROSS-REFERENCE TO RELATED PATENT APPLICATION
[0001] This application claims the benefit of priority to Taiwan
Patent Application No. 109123724, filed on Jul. 14, 2020. The
entire content of the above identified application is incorporated
herein by reference.
[0002] Some references, which may include patents, patent
applications and various publications, may be cited and discussed
in the description of this disclosure. The citation and/or
discussion of such references is provided merely to clarify the
description of the present disclosure and is not an admission that
any such reference is "prior art" to the disclosure described
herein. All references cited and discussed in this specification
are incorporated herein by reference in their entireties and to the
same extent as if each reference was individually incorporated by
reference.
FIELD OF THE DISCLOSURE
[0003] The present disclosure relates to an aqueous acrylic resin,
and more particularly to an aqueous acrylic resin with high heat
resistance and a polymeric composition thereof, which belong to the
technical field of the production and processing of artificial
leathers.
BACKGROUND OF THE DISCLOSURE
[0004] Synthetic leather is formed from a cloth substrate having
one or more layers of polyurethane (PU) or polyvinyl chloride (PVC)
laminated thereon, and is an ideal replacement for real leather.
Nowadays, synthetic leather products have been completely
integrated into our daily lives. However, certain properties of the
synthetic leather are inferior to those of the real leather. Thus,
a treating agent is used to form a coating on a surface of the
synthetic leather, so as to allow the synthetic leather to have
properties that are similar to or better than those of the real
leather.
[0005] Most treating agents used by both foreign and domestic
synthetic leather manufacturers are solvent-based treating agents.
Since the solvent-based treating agents contain toxic and harmful
organic solvents such as toluene, a large quantity of volatile
organic compounds (VOCs) is produced during the production or use
of the synthetic leather, which are harmful to the environment and
human health. In order to solve this problem, synthetic leather
manufacturers have begun using water-based treating agents as a
substitute for solvent-based treating agents. Although the
water-based treating agents have been successfully used in the
production of synthetic leather, the water-based treating agents
are still not widely used due to its poor heat resistance.
SUMMARY OF THE DISCLOSURE
[0006] In response to the above-referenced technical inadequacies,
the present disclosure provides an aqueous acrylic resin with high
heat resistance and a polymeric composition thereof. A molecular
structure of the aqueous acrylic resin contains a greater number of
polar groups such as ester groups and alkoxy groups. Accordingly, a
cohesive force and degree of crosslinking of the aqueous acrylic
resin can be significantly increased, and the aqueous acrylic resin
therefore has a higher heat resistance.
[0007] In one aspect, the present disclosure provides a polymeric
composition for forming an aqueous acrylic resin with high heat
resistance. The polymeric composition includes a monomer
composition and a reactive emulsifier. The monomer composition,
based on 100 wt % of the monomer composition, includes:
92 to 98 wt % of at least one alkyl group containing methyl
acrylate; 1 to 4 wt % of at least one carboxyl group containing
methacrylic acid; 1 to 5 wt % of an alkene-based unsaturated group
containing methyl acrylate; 1 to 5 wt % of a hydroxyl group
containing acrylic polyester polyol and/or a hydroxyl group
containing acrylic polyether polyol; and 1 to 5 wt % of an
alkoxysilane.
[0008] In one embodiment of the present disclosure, the at least
one alkyl group containing methyl acrylate is selected from the
group consisting of methyl methacrylate, ethyl acrylate, propyl
methacrylate, butyl acrylate, isobutyl methacrylate, pentyl
methacrylate, hexyl methacrylate, heptyl methacrylate, octyl
methacrylate, 2-ethylhexyl methacrylate, n-octyl methacrylate,
iso-octyl methacrylate, nonyl methacrylate, decyl methacrylate,
lauryl methacrylate, octadecyl methacrylate, methoxyethyl
methacrylate, n-butyl methacrylate, 2-ethylhexyl acrylate, and
ethoxymethyl acrylate.
[0009] In one embodiment of the present disclosure, the at least
one alkyl group containing methyl acrylate includes methyl
methacrylate, n-butyl methacrylate, and butyl acrylate that are
added in a weight ratio of 3:1:1.
[0010] In one embodiment of the present disclosure, the at least
one carboxyl group containing methacrylic acid is selected from the
group consisting of acrylic acid, methacrylic acid, maleic acid,
fumaric acid, itaconic acid, butenoic acid, and maleic
anhydride.
[0011] In one embodiment of the present disclosure, the at least
one carboxyl group containing methacrylic acid includes acrylic
acid and methacrylic acid that are added in a weight ratio of
1:1.
[0012] In one embodiment of the present disclosure, the
alkene-based unsaturated group containing methyl acrylate is
selected from the group consisting of vinyl acetate, styrene,
methyl styrene, vinyl toluene, methacrylonitrile, diacetone
acrylamide, N-hydroxymethyl acrylamide, cyclohexyl methacrylate,
and isobornyl methacrylate.
[0013] In one embodiment of the present disclosure, the
alkene-based unsaturated group containing methyl acrylate is
isobornyl methacrylate.
[0014] In another aspect, the present disclosure provides an
aqueous acrylic resin with high heat resistance that is formed by
the polymeric composition including above-mentioned functional
monomers.
[0015] In yet another aspect, the present disclosure provides a
method for preparing an aqueous acrylic resin with high heat
resistance. The method includes: forming an aqueous system in a
reaction tank, the aqueous system including deionized water, a
buffer, an emulsifier and an initiator; forming the polymeric
composition including the above-mentioned functional monomers into
a pre-emulsion, and adding a portion of the pre-emulsion to the
aqueous system to carry out a reaction, so as to form a seeded
emulsion; and adding the remaining portion of the pre-emulsion to
the aqueous system to continue the reaction.
[0016] In one embodiment of the present disclosure, the buffer is
sodium bicarbonate or ammonia water, the emulsifier is sodium
dodecylbenzene sulfonate, and the initiator is sodium
persulfate.
[0017] One of the beneficial effects of the present disclosure is
that, the polymeric composition can be used to form an aqueous
acrylic resin that has better heat resistance and alcohol
resistance through the hydroxyl group containing acrylic polyester
polyol and/or the hydroxyl group containing acrylic polyether
polyol, the alkoxysilane, and the other functional monomers being
bonded together via an emulsion polymerization reaction.
Furthermore, the aqueous acrylic resin can be used in the
production of artificial leathers, so as to reduce emission of
volatile organic compounds (VOC), and to meet physical property
requirements of the synthetic leathers.
[0018] These and other aspects of the present disclosure will
become apparent from the following description of the embodiment
taken in conjunction with the following drawings and their
captions, although variations and modifications therein may be
affected without departing from the spirit and scope of the novel
concepts of the disclosure.
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The described embodiments may be better understood by
reference to the following description and the accompanying
drawings, in which:
[0020] FIG. 1 is a schematic view showing one implementation of an
aqueous acrylic resin with high heat resistance according to the
present disclosure; and
[0021] FIG. 2 is a flowchart of a method for preparing the aqueous
acrylic resin with high heat resistance according to the present
disclosure.
DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS
[0022] The present disclosure is more particularly described in the
following examples that are intended as illustrative only since
numerous modifications and variations therein will be apparent to
those skilled in the art. Like numbers in the drawings indicate
like components throughout the views. As used in the description
herein and throughout the claims that follow, unless the context
clearly dictates otherwise, the meaning of "a", "an", and "the"
includes plural reference, and the meaning of "in" includes "in"
and "on". Titles or subtitles can be used herein for the
convenience of a reader, which shall have no influence on the scope
of the present disclosure.
[0023] The terms used herein generally have their ordinary meanings
in the art. In the case of conflict, the present document,
including any definitions given herein, will prevail. The same
thing can be expressed in more than one way. Alternative language
and synonyms can be used for any term(s) discussed herein, and no
special significance is to be placed upon whether a term is
elaborated or discussed herein. A recital of one or more synonyms
does not exclude the use of other synonyms. The use of examples
anywhere in this specification including examples of any terms is
illustrative only, and in no way limits the scope and meaning of
the present disclosure or of any exemplified term. Likewise, the
present disclosure is not limited to various embodiments given
herein. Numbering terms such as "first", "second" or "third" can be
used to describe various components, signals or the like, which are
for distinguishing one component/signal from another one only, and
are not intended to, nor should be construed to impose any
substantive limitations on the components, signals or the like.
[0024] As a substitution for real leathers, synthetic leathers have
an extremely wide range of application. Therefore, the present
disclosure provides a polymeric composition, which can be formed
into an aqueous acrylic resin via an emulsion polymerization
reaction, so as to increase the applicability of an aqueous
treating agent for a surface treatment of the synthetic leathers.
The polymeric composition includes a monomer composition and a
reactive emulsifier. The monomer composition, based on 100 wt % of
the monomer composition, includes:
92 to 98 wt % of at least one alkyl group containing methyl
acrylate; 1 to 4 wt % of at least one carboxyl group containing
methacrylic acid; 1 to 5 wt % of an alkene-based unsaturated group
containing methyl acrylate; 1 to 5 wt % of a hydroxyl group
containing acrylic polyester polyol and/or a hydroxyl group
containing acrylic polyether polyol; and 1 to 5 wt % of an
alkoxysilane.
[0025] Referring to FIG. 1, in practice, the aqueous treating agent
that includes the aqueous acrylic resin formed of the polymeric
composition of the present disclosure can form into a uniform
coated layer 2 on a surface 11 of a synthetic leather 1 (such as a
PVC synthetic leather or a PU synthetic leather). Accordingly,
physical properties of the synthetic leather 1 can be improved,
especially with respect to heat resistance and alcohol resistance.
Furthermore, a recipe of the aqueous treating agent can be adjusted
to allow the synthetic leather 1 to have a special appearance and
texture. It is worth mentioning that when the aqueous acrylic resin
is used in the production of the synthetic leather 1, emission of
volatile organic compounds (VOC) is significantly reduced due to
water being used as a dispersion medium, and requirements of
environmental protection regulations can be satisfied. In addition,
the aqueous acrylic resin with a higher heat resistance and alcohol
resistance is better adapted for a production process of the
synthetic leather 1.
[0026] More specifically, the emulsion polymerization reaction of
the polymeric composition of the present disclosure can be carried
out in an aqueous system, in which functional monomers and the
reactive emulsifier can be bonded together to form the molecular
structure of the aqueous acrylic resin. In certain embodiments, the
aqueous system includes deionized water, a buffer, an emulsifier
and an initiator. The buffer can be sodium bicarbonate or ammonia
water, the emulsifier can be sodium dodecylbenzene sulfonate
(SDBS), and the initiator can be sodium persulfate (SPS). However,
such examples are not intended to limit the present disclosure.
[0027] In the polymeric composition, the at least one alkyl group
containing methyl acrylate can be selected from the group
consisting of methyl methacrylate, ethyl acrylate, propyl
methacrylate, butyl acrylate, isobutyl methacrylate, pentyl
methacrylate, hexyl methacrylate, heptyl methacrylate, octyl
methacrylate, 2-ethylhexyl methacrylate, n-octyl methacrylate,
iso-octyl methacrylate, nonyl methacrylate, decyl methacrylate,
lauryl methacrylate, octadecyl methacrylate, methoxyethyl
methacrylate, n-butyl methacrylate, 2-ethylhexyl acrylate, and
ethoxymethyl acrylate. However, such examples are not intended to
limit the present disclosure. The at least one alkyl group
containing methyl acrylate can be used to adjust the molecular
structure of the aqueous acrylic resin. Therefore, the aqueous
acrylic resin can have an appropriate glass transition temperature
(Tg), and is helpful for improving physical properties of the
coated layer 2, such as hardness, gloss, fullness, weather
resistance, and adhesion to a substrate.
[0028] The at least one carboxyl group containing methacrylic acid
can be selected from the group consisting of acrylic acid,
methacrylic acid, maleic acid, fumaric acid, itaconic acid,
butenoic acid, and maleic anhydride. However, such examples are not
intended to limit the present disclosure. The at least one carboxyl
group containing methacrylic acid can provide carboxyl groups to
the molecular structure of the aqueous acrylic resin, in which the
carboxyl groups carrying negative charges can produce an adsorption
effect with respect to substances carrying positive charges (such
as positively charged inorganic particles). The carboxyl groups can
also serve as bridging points for increasing intermolecular force,
thereby increasing the mechanical strength of the coated layer 2.
Furthermore, the at least one carboxyl group containing methacrylic
acid can be used to increase the adhesion of the coated layer 2
with respect to the substrate.
[0029] The alkene-based unsaturated group containing methyl
acrylate can be selected from the group consisting of vinyl
acetate, styrene, methyl styrene, vinyl toluene, methacrylonitrile,
diacetone acrylamide, N-hydroxymethyl acrylamide, cyclohexyl
methacrylate, and isobornyl methacrylate. However, such examples
are not intended to limit the present disclosure. The alkene-based
unsaturated groups can be used to improve the physical properties
of the coated layer 2, such as hardness, heat resistance, alcohol
resistance, weather resistance, and adhesion to a substrate.
[0030] The hydroxyl group containing acrylic polyester polyol
and/or the hydroxyl group containing acrylic polyether polyol can
be selected from products of Dow Chemical Company, such as
SPECFLEX.TM. NC 630, SPECFLEX.TM. NC 701, VORANAL.TM. 2070,
VORANAL.TM. 3943A, VORANAL.TM. HL431, VORANAL.TM. HN395,
VORANAL.TM. HF4001, VORANAL.TM. WH4043, and VORANAL.TM. CP6001.
However, such examples are not intended to limit the present
disclosure. The hydroxyl group containing acrylic polyester polyol
and/or the hydroxyl group containing acrylic polyether polyol can
be used to increase the adaptability of a coating (i.e., the
aqueous treating agent) to different substrates, and to allow the
coated layer 2 to have desired properties (such as flexibility,
high hardness, high gloss, and high adhesion).
[0031] The alkoxysilane can be selected from products of Dow
Chemical Company (such as XIAMETER.TM. OFS-6030 Silane, which is
composed of .gamma.-methacryloxypropyltrimethoxysilane), but the
present disclosure is not limited thereto. The alkoxysilane can be
used to provide alkoxy groups to the molecular structures of the
aqueous acrylic resin, thereby improving the physical properties of
the coated layer 2 (especially with respect to heat resistance and
alcohol resistance).
[0032] The reactive emulsifier of the polymeric composition of the
present disclosure can be selected from an emulsifier known as
"SR-10" that is available from ADEKA Corporation, an emulsifier
known as "PC-10" that is available from Sanyo Chemical Industries,
Ltd, and emulsifiers known as "NOIGEN RN-20", "NOIGEN RN-30" and
"NOIGEN RN-50" that are available from Chin Yee Chemical Industries
Co., Ltd.
[0033] Referring to FIG. 2, the present disclosure further provides
an aqueous acrylic resin with high heat resistance, which is formed
of the polymeric composition including the above-mentioned
functional monomers and the reactive emulsifier. The aqueous
acrylic resin with high heat resistance of the present disclosure
is prepared by the following steps. The first step (step S100) is
to form an aqueous system in a reaction tank. The next step (step
S102) is to form a polymeric composition into a pre-emulsion and
add a portion of the pre-emulsion to the aqueous system to carry
out a reaction, so as to form a seeded emulsion. The last step
(step S104) is to add the remaining portion of the pre-emulsion to
the aqueous system to continue the reaction.
[0034] In step S100, deionized water, a buffer, an emulsifier and
an initiator are added in a certain ratio into a reaction tank and
are well mixed by stirring, so as to form a mixture. Then, a
temperature in the reaction tank is raised to a first temperature
(e.g., 76-78.degree. C.), and a metered quantity of a solution of
the initiator is added to the mixture to be stirred for a period of
time, so as to form the aqueous system. In step S102, the polymeric
composition is mixed with an appropriate amount of deionized water
to form a pre-emulsion. Then, a portion of the pre-emulsion is
added in a certain amount to the aqueous system to carry out
reaction over a period of time, so as to form a seeded emulsion. In
step S104, a remaining portion of the pre-emulsion is added into
the reaction tank under the first temperature, and a metered
quantity of the solution of the initiator is then added into the
reaction tank. After that, the temperature in the reaction tank is
lowered to a second temperature (e.g., 40-42.degree. C.), and the
reaction continues for a period of time. The buffer is then added
to adjust the pH of the resulting product. Subsequently, the
temperature is lowered to room temperature.
Example 1
[0035] 70 parts by weight of deionized water, 0.6 parts by weight
of sodium bicarbonate, and 5 parts by weight of sodium
dodecylbenzene sulfonate (SDBS) are added into the reaction tank
and are well mixed by stirring. A temperature in the reaction tank
is raised to 78.degree. C., and a solution formed of 0.1 parts by
weight of sodium persulfate (SPS) and 2 parts by weight of
deionized water is added into the reaction tank. 35 parts by weight
of deionized water, 1 part by weight of the reactive emulsifier
with the name "SR-10", 57 parts by weight of methyl methacrylate
(MMA), 19 parts by weight of n-butyl methacrylate (n-BMA), 18 parts
by weight of butyl acrylate (BA), 1 part by weight of acrylic acid
(AA), 1 part by weight of methacrylic acid (MAA), 2 parts by weight
of isobornyl methacrylate (IBOMA), 1 part by weight of the polyol
with the name "SPECFLEX.TM. NC 701", and 1 part by weight of the
alkoxysilane with the name "XIAMETER.TM. OFS-6030" are well mixed
by a stirrer to form a pre-emulsion. 14 parts by weight of the
pre-emulsion is added into the reaction tank to carry out a
reaction for over 30 minutes to form a seeded emulsion. The
remaining pre-emulsion is added into the reaction tank in the form
of drops, while the temperature is maintained at 78.degree. C.
After the reaction continues for 2 hours, a solution formed of 0.2
parts by weight of sodium persulfate (hydrophilic initiator) and
37.5 parts by weight of deionized water is added into the reaction
tank in the form of drops, and a dropping time is controlled to be
within 2 hours. After that, the temperature in the reaction tank is
lowered to less than 40.degree. C., and ammonia water is then added
to adjust the pH of an obtained product to 7-8. Finally, the
temperature is lowered to room temperature. The calculated solid
content of the product is 42% by weight. The product is formed into
a film, the properties of which are tested and shown in Table
1.
Example 2
[0036] The preparing process of Example 2 is the same as that of
Example 1. The difference is that a monomer composition of a
polymeric composition includes 57 parts by weight of methyl
methacrylate (MMA), 19 parts by weight of n-butyl methacrylate
(n-BMA), 18 parts by weight of butyl acrylate (BA), 1 part by
weight of acrylic acid (AA), 1 part by weight of methacrylic acid
(MAA), 2 parts by weight of isobornyl methacrylate (IBOMA), 1 part
by weight of the polyol with the name "VORANAL.TM. HF4001", and 1
part by weight of the alkoxysilane with the name "XIAMETER.TM.
OFS-6030". The calculated solid content of a product obtained by
the preparing process is 42% by weight. The product is formed into
a film, the properties of which are tested and shown in Table
1.
Example 3
[0037] The preparing process of Example 3 is the same as that of
Example 1. The difference is that a monomer composition of a
polymeric composition includes 57 parts by weight of methyl
methacrylate (MMA), 19 parts by weight of n-butyl methacrylate
(n-BMA), 18 parts by weight of butyl acrylate (BA), 1 part by
weight of acrylic acid (AA), 1 part by weight of methacrylic acid
(MAA), 2 parts by weight of isobornyl methacrylate (IBOMA), 0.5
parts by weight of the polyol with the name "SPECFLEX.TM. NC 701",
0.5 parts by weight of the polyol with the name "VORANAL.TM.
HF4001", and 1 part by weight of the alkoxysilane with the name
"XIAMETER.TM. OFS-6030". The calculated solid content of a product
obtained by the preparing process is 42% by weight. The product is
formed into a film, the properties of which are tested and shown in
Table 1.
Comparative Example 1
[0038] The preparing process of Comparative Example 1 is the same
as that of Example 1. The difference is that a monomer composition
of a polymeric composition includes 57 parts by weight of methyl
methacrylate (MMA), 19 parts by weight of n-butyl methacrylate
(n-BMA), 18 parts by weight of butyl acrylate (BA), 1 part by
weight of acrylic acid (AA), 1 part by weight of methacrylic acid
(MAA), and 2 parts by weight of isobornyl methacrylate (IBOMA).
Furthermore, the polymeric composition includes the reactive
emulsifier with the name "PC-10". The calculated solid content of a
product obtained by the preparing process is 42% by weight. The
product is formed into a film, the properties of which are tested
and shown in Table 1.
TABLE-US-00001 TABLE 1 Comparative Ingredients Example 1 Example 2
Example 3 Example 1 Initial Deionized water 70 70 70 70 reaction
Sodium bicarbonate 0.6 0.6 0.6 0.6 material SDBS 5 5 5 5 (Anionic
emulsifier) Hydrophilic Deionized water 2 2 2 2 initiator SPS 0.1
0.1 0.1 0.1 Polymeric Deionized water 35 35 35 35 composition
Reactive emulsifier SR-10 1 1 1 PC-10 1 Monomers (A) MMA 57 57 57
59 Alkyl group n-BMA 19 19 19 19 containing methyl BA 18 18 18 18
acrylate (B) AA 1 1 1 1 Carboxyl group MAA 1 1 1 1 containing
methacrylic acid (C) IBOMA 2 2 2 2 Alkene-based unsaturated group
containing methyl acrylate (D) SPECFLEX .TM. 1 1 0.5 Hydroxyl group
NC 701 containing acrylic VORANAL .TM. 0.5 polyester polyol HF4001
and/or ahydroxyl group containing acrylic polyether polyol (E)
XIAMETER .TM. 1 1 1 Alkoxysilane OFS-6030 Hydrophilic Deionized
water 37.5 37.5 37.5 37.5 initiator SPS 0.2 0.2 0.2 0.2 Resin Color
appearance Milky white Milky white Milky white Milky white Solid
content (%) 42 42 42 42 Average particle (nm) 78 80 77 85 Test
results Resistance to stickiness when heated No stickiness No
stickiness No stickiness Severe stickiness (70.degree. C./3 Kg/24
hours) Resistance to abrasion under alcohol Normal Normal Normal
Flawed/scratched
In Table 1, MMA refers to methyl methacrylate, n-BMA refers to
n-butyl methacrylate, BA refers to butyl acrylate, AA refers to
acrylic acid, MAA refers to methacrylic acid, and IBOMA refers to
isobornyl methacrylate.
[0039] The resistance to stickiness when heated is tested by a
method as described below. Firstly, a tested film is cut into two
samples each having a size of 5 cm.times.5 cm. Subsequently, the
two samples are attached to each other, and are pressed upon by an
iron block of 3 kg for 24 hours in an oven at 70.degree. C. After
the two samples are taken out of said oven, whether or not there is
a stickiness between the two samples is to be observed.
[0040] The resistance to abrasion under alcohol is tested by a
method as described below. An electric friction decoloring machine
is provided, which includes a clamp at a lower position and a
friction head at a higher position. A sample of a tested film
having a size of 9 cm.times.18 cm is fixed to the clamp. A white
cotton cloth impregnated with 95% alcohol is fixed to the friction
head, and is used to wipe the sample for ten times with a load of 1
kg. Afterwards, it is observed whether or not the sample is normal
(i.e., whether or not the sample has scratches or flaws on the
sample).
[0041] One of the beneficial effects of the present disclosure is
that, the polymeric composition can be used to form an aqueous
acrylic resin that has better heat resistance and alcohol
resistance through the hydroxyl group containing acrylic polyester
polyol and/or the hydroxyl group containing acrylic polyether
polyol, the alkoxysilane, and the other functional monomers being
bonded together via an emulsion polymerization reaction.
Furthermore, the aqueous acrylic resin can be used in the
production of artificial leathers, so as to reduce the emission of
volatile organic compounds (VOC), and to meet the physical property
requirements of the synthetic leathers.
[0042] The foregoing description of the exemplary embodiments of
the disclosure has been presented only for the purposes of
illustration and description and is not intended to be exhaustive
or to limit the disclosure to the precise forms disclosed. Many
modifications and variations are possible in light of the above
teaching.
[0043] The embodiments were chosen and described in order to
explain the principles of the disclosure and their practical
application so as to enable others skilled in the art to utilize
the disclosure and various embodiments and with various
modifications as are suited to the particular use contemplated.
Alternative embodiments will become apparent to those skilled in
the art to which the present disclosure pertains without departing
from its spirit and scope.
* * * * *